mirror of
https://github.com/kubeshark/kubeshark.git
synced 2026-05-07 17:57:47 +00:00
85 lines
2.8 KiB
Go
85 lines
2.8 KiB
Go
package check
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import (
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"context"
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"fmt"
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"log"
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"regexp"
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"github.com/kubeshark/kubeshark/apiserver"
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"github.com/kubeshark/kubeshark/config"
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"github.com/kubeshark/kubeshark/kubernetes"
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"github.com/kubeshark/kubeshark/utils"
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)
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func ServerConnection(kubernetesProvider *kubernetes.Provider) bool {
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log.Printf("\nAPI-server-connectivity\n--------------------")
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serverUrl := kubernetes.GetLocalhostOnPort(config.Config.Hub.PortForward.SrcPort)
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apiServerProvider := apiserver.NewProvider(serverUrl, 1, apiserver.DefaultTimeout)
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if err := apiServerProvider.TestConnection(""); err == nil {
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log.Printf("%v found Kubeshark server tunnel available and connected successfully to API server", fmt.Sprintf(utils.Green, "√"))
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return true
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}
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connectedToApiServer := false
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if err := checkProxy(serverUrl, kubernetesProvider); err != nil {
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log.Printf("%v couldn't connect to API server using proxy, err: %v", fmt.Sprintf(utils.Red, "✗"), err)
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} else {
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connectedToApiServer = true
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log.Printf("%v connected successfully to API server using proxy", fmt.Sprintf(utils.Green, "√"))
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}
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if err := checkPortForward(serverUrl, kubernetesProvider); err != nil {
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log.Printf("%v couldn't connect to API server using port-forward, err: %v", fmt.Sprintf(utils.Red, "✗"), err)
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} else {
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connectedToApiServer = true
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log.Printf("%v connected successfully to API server using port-forward", fmt.Sprintf(utils.Green, "√"))
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}
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return connectedToApiServer
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}
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func checkProxy(serverUrl string, kubernetesProvider *kubernetes.Provider) error {
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ctx, cancel := context.WithCancel(context.Background())
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defer cancel()
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httpServer, err := kubernetes.StartProxy(kubernetesProvider, config.Config.Tap.ProxyHost, config.Config.Hub.PortForward.SrcPort, config.Config.Hub.PortForward.DstPort, config.Config.KubesharkResourcesNamespace, kubernetes.ApiServerServiceName, cancel)
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if err != nil {
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return err
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}
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apiServerProvider := apiserver.NewProvider(serverUrl, apiserver.DefaultRetries, apiserver.DefaultTimeout)
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if err := apiServerProvider.TestConnection(""); err != nil {
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return err
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}
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if err := httpServer.Shutdown(ctx); err != nil {
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log.Printf("Error occurred while stopping proxy, err: %v", err)
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}
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return nil
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}
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func checkPortForward(serverUrl string, kubernetesProvider *kubernetes.Provider) error {
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ctx, cancel := context.WithCancel(context.Background())
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defer cancel()
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podRegex, _ := regexp.Compile(kubernetes.ApiServerPodName)
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forwarder, err := kubernetes.NewPortForward(kubernetesProvider, config.Config.KubesharkResourcesNamespace, podRegex, config.Config.Tap.GuiPort, config.Config.Tap.GuiPort, ctx, cancel)
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if err != nil {
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return err
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}
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apiServerProvider := apiserver.NewProvider(serverUrl, apiserver.DefaultRetries, apiserver.DefaultTimeout)
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if err := apiServerProvider.TestConnection(""); err != nil {
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return err
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}
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forwarder.Close()
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return nil
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}
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